Coreweave outage history

October 22, 2026 9:32PM UTC Identified - Hello, We are actively investigating a facility power event in US-EAST-15A following the loss of both utility power feeds at the site. Customers in this region may experience compute unavailability, job interruptions, , Inference disruptions and degraded or unavailable Object Storage. Our engineering and facilities teams are actively working to restore stable power and cooling. Impact may continue or widen until site conditions stabilize. If you are impacted or have questions, please contact [email protected]. We apologize for the disruption and thank you for your patience. Thank you, CoreWeave Support October 23, 2026 12:05AM UTC Monitoring - The disruption has been traced to a tripped main feed from the local utility provider, who is actively troubleshooting on site. The facility is running on backup generator power, cooling has been restored, and room temperatures are returning to normal. When utility power gets restored, we will begin bringing systems back online in stages, prioritizing restoring customer capacity. A subset of racks sustained a cooling related hardware issue during the event and require servicing before they can be powered back on; we currently estimate these will be restored by Friday morning. We expect more information on the utility power timeline within the next hour and will post more updates October 23, 2026 3:06AM UTC Monitoring - Power has been restored and node recovery is underway. Nodes are being brought back online in phases, starting with air cooled systems; B200 (liquid cooled) nodes will follow once that first phase completes. We expect full recovery by Morning time due to the subset of racks which sustained a cooling issue during the event and require servicing before they can be powered back on. We'll share more updates as more nodes return to service. October 23, 2026 9:05PM UTC Monitoring - Most capacity in US-EAST-15A has been restored following the facility power event. Power is stable, and we are not expecting a repeat of the utility disruption. A subset of racks still requires follow-on facility work (including coolant servicing) before they can be safely returned to service. Recovered capacity remains available for use while that work continues. We will keep this incident in Monitoring until remaining facility recovery is complete, and will post another update when that work wraps up or if the situation changes. Thank you, CoreWeave Support October 25, 2026 12:43AM UTC Investigating - We are investigating a renewed cooling disruption at the US-EAST-15A facility, with additional racks shutting down and customer impact observed. Customers in this region may experience compute unavailability, job interruptions, and inference disruptions. Our engineering and facilities teams are working with the facility provider to determine the cause and restore stable cooling. Impact may continue or widen until site conditions stabilize. If you are impacted or have questions, please contact [email protected]. We apologize for the renewed disruption and thank you for your patience. Thank you, CoreWeave Support October 25, 2026 2:06AM UTC Investigating - Our facility provider has confirmed a renewed loss of utility power at US-EAST-15A, and the site is currently running on backup generators. The utility provider is investigating the power loss, while the facility's cooling specialists are on site investigating the cooling disruption. We apologize for the continued disruption and thank you for your patience. If you are impacted or need assistance, please contact [email protected]. Thank you, CoreWeave Support October 26, 2026 4:27AM UTC Monitoring - Power has been restored at US-EAST-15A, and we're working to stabilize the site. Most affected nodes are back in service, and we're bringing the remaining nodes back online. We'll continue to monitor the site and share updates as recovery progresses.

October 13, 2026 9:18PM UTC Investigating - We are investigating an issue preventing users from creating and viewing API tokens in the CoreWeave Console. This also affects kubeconfig downloads. We will provide an update as more information becomes available. October 13, 2026 9:39PM UTC Identified - We have identified the root cause of the issue and are actively working on a fix. October 13, 2026 10:24PM UTC Resolved - We believe the issue is resolved, and API Token generation is now operational. If you are continuing to experience issues, please reach out to [email protected].

October 12, 2026 4:45PM UTC Identified - Hello, We are investigating an issue affecting Object Storage and Shared File System volumes in US-CENTRAL-08A. Customers in this region may be unable to read from or write to Object Storage and file system volumes. Our team is actively investigating and working toward restoration. We will provide updates as more information becomes available. We apologise for any inconvenience this has caused and we appreciate your patience as we work through this. Please feel free to reach out to [email protected] for any questions. Thank You, CoreWeave Support October 12, 2026 4:51PM UTC Identified - Hello, We are continuing to investigate a service disruption affecting Object Storage and Shared File System volumes in US-CENTRAL-08A. Customers in this region may be unable to read from or write to Object Storage and file system volumes. Our team is actively working to restore service. We will provide further updates as more information becomes available. We apologize for any inconvenience and appreciate your patience. Please contact [email protected] with any questions. Thank you, CoreWeave Support October 12, 2026 6:36PM UTC Monitoring - Hello, We have mitigated the issue affecting Object Storage and Shared File System volumes in US-CENTRAL-08A. Connectivity has been restored, and we are continuing to monitor for stability. If you continue to experience issues in this region, please contact [email protected]. Thank you for your patience, CoreWeave Support October 12, 2026 9:13PM UTC Resolved - Hello, This incident has been resolved. Object Storage and Shared File System volumes in US-CENTRAL-08A are operating normally following a period of monitoring with no further issues observed. We apologize for any inconvenience caused. If you continue to experience problems, please contact [email protected]. Thank you, CoreWeave Support

October 6, 2026 6:40PM UTC Investigating - We are investigating an issue impact the cloud console, request to console.coreweave.com will return 404 and dependent services such as Grafana are impacted as well. We'll provide additional updates as the situation evolves. October 6, 2026 6:47PM UTC Monitoring - Console access is restored, we are continuing to monitor the situation. Please contact support if you encounter any issues. October 6, 2026 7:22PM UTC Resolved - This issue is now considered resolved

October 5, 2026 6:22AM UTC Investigating - Hello, We are actively investigating a networking issue that may be impacting the availability of our services. As the situation evolves, we will continue to provide our customers with updates on the matter. If you have any questions, we encourage you to reach out to support by email: [email protected] We apologize for any inconvenience this may cause and thank you for your patience while we work to resolve the matter in a timely manner. Thank you, CoreWeave Support October 5, 2026 8:37AM UTC Monitoring - Hello, Network connectivity to the affected region (US-CENTRAL-09A) has been restored, and services are now back online. We have mitigated the issue in coordination with our network provider and are monitoring the environment closely for continued stability. We are keeping this incident open in a mitigated state while our network provider completes their investigation, and we will continue to provide updates as the situation progresses. If you have any questions, please reach out to our support team by email: [email protected]. We apologise for any inconvenience this may have caused and thank you for your patience while we work to fully resolve the issue. Thank you, CoreWeave Support October 5, 2026 12:14PM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

October 5, 2026 5:48AM UTC Investigating - Hello, We are actively investigating a storage issue that may be impacting our storage services. As the situation evolves, we will continue to update our customers on the matter. If you have any questions, we encourage you to reach out to support by email: [email protected] We apologize for any inconvenience this may cause and thank you for your patience while we work to resolve the matter in a timely manner. Thank you, CoreWeave Support

September 26, 2026 12:23PM UTC Investigating - We are investigating an issue that may result in reduced IOPS for Object Storage in the US-CENTRAL-09A region. Our engineering team is actively engaged and working to identify the root cause. We will continue to provide updates as we work to resolve this issue September 26, 2026 2:29PM UTC Monitoring - We've implemented a fix to address the Object Storage reduced IOPS affecting US-CENTRAL-09A. All services are now fully operational, and we are monitoring closely to ensure stability. We apologise for any inconvenience this may have caused. If you continue to see issues, please reach out to us at: [email protected]. September 27, 2026 6:38AM UTC Resolved - We believe the issue is resolved, and our services are fully operational. We apologise for any inconvenience this may have caused. If you continue to see issues, please reach out to us at: [email protected].

September 15, 2026 11:38PM UTC Investigating - We are investigating an issue that is causing errors when creating new Dedicated Inference deployments or editing existing ones. Deployments that are already running are not affected and continue to serve traffic normally. September 15, 2026 11:42PM UTC Identified - We have identified the cause of the errors affecting Dedicated Inference deployment creates and edits, and a fix is being prepared. Running deployments remain unaffected and are serving traffic normally. September 16, 2026 1:36AM UTC Monitoring - A fix has been applied and Dedicated Inference deployment creates and edits are succeeding again. We are monitoring to confirm full recovery. If you are still seeing errors, please reach out to our support team. September 16, 2026 2:49AM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

September 11, 2026 10:12AM UTC Investigating - Hello, We are currently investigating an issue affecting CoreWeave Cloud authentication (OIDC) services. Customers may experience issues accessing CoreWeave AI Object Storage (CAIOS), authenticating through OIDC, or obtaining credentials for CAIOS workloads. Our team is actively working with the highest priority level to restore full functionality as quickly as possible. We apologise for any inconvenience and appreciate your patience while we work to resolve the issue. — CoreWeave Support September 11, 2026 10:29AM UTC Investigating - Hello, We are currently investigating an issue affecting CoreWeave Cloud authentication (OIDC) services. Customers may experience issues accessing CoreWeave AI Object Storage (CAIOS), authenticating through OIDC, or obtaining credentials for CAIOS workloads. Our team is actively working with the highest priority level to restore full functionality as quickly as possible. We apologise for any inconvenience and appreciate your patience while we work to resolve the issue. — CoreWeave Support September 11, 2026 10:43AM UTC Monitoring - Hello, The issue has been mitigated. CoreWeave Cloud authentication (OIDC) access to CoreWeave AI Object Storage (CAIOS) has returned to baseline, and affected workloads should now operate normally. Our teams continue to monitor this to prevent any recurrence. Thank you for your patience during this window. Thank You, CoreWeave Support Team. September 11, 2026 11:07AM UTC Resolved - Hello, The incident has been resolved. CoreWeave Cloud authentication (OIDC) access to CoreWeave AI Object Storage (CAIOS) has returned to normal baselines, and any affected workloads should now operate as expected. Thank you for your patience during this window. Thank You, CoreWeave Support Team.

August 20, 2026 5:12PM UTC Investigating - We are investigating a loss of production GPU capacity affecting a subset (19) of GB300 racks in DH204. Affected nodes have intermittently gone unhealthy and been evicted; a number have been taken out of production for recovery. Affected: GB300 compute Current impact: Several racks are below the 16-node threshold for a full NVL64 domain, so multi-node jobs targeting those racks may fail to place or may be interrupted. Capacity in other datahalls and regions is unaffected. The first node losses were observed at approximately 2026-08-19 19:00 UTC. Fleet Operations has been recovering nodes by reboot since then, and additional engineering teams were engaged at 16:30 UTC today. We will keep you posted on further details as we progress. Thank you for your patience and cooperation while we are investigating.

August 13, 2026 11:21PM UTC Investigating - Beginning at 22:51 UTC on 13 August 2026, we identified a network connectivity issue affecting internal service communication within the EU-SOUTH-03B availability zone. Customers in this availability zone may experience intermittent errors or delays when performing cluster control-plane operations, such as Kubernetes API requests. Running workloads and compute nodes are not currently showing impact. Our networking teams are actively engaged and investigating. Other availability zones and regions are unaffected. August 14, 2026 12:56AM UTC Resolved - Between 22:51 UTC on 13 August and 00:38 UTC on 14 August 2026, customers with resources in the EU-SOUTH-03B availability zone may have experienced intermittent errors performing cluster control-plane operations, degraded cluster access, and brief periods where nodes reported as unavailable. The cause was a hardware fault affecting network links within the availability zone. Our network engineering team removed the affected links from service, and connectivity has been stable since 00:38 UTC. Node capacity was not lost during this event, and no other availability zones or regions were affected. This incident is now resolved.

August 10, 2026 11:00PM UTC Investigating - Hello, We are actively investigating a storage issue that may be impacting our storage services in US-EAST-02A. As the situation evolves, we will continue to update our customers on the matter. If you have any questions, we encourage you to reach out to support by email: [email protected] We apologize for any inconvenience this may cause and thank you for your patience while we work to resolve the matter in a timely manner. Thank you, CoreWeave Support August 10, 2026 11:28PM UTC Identified - We have identified the root cause of the issue and are actively working on a fix. We will update you when we have pushed a fix. August 11, 2026 7:03PM UTC Resolved - The issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

August 9, 2026 3:31PM UTC Investigating - We are currently investigating an issue related to node delivery/reboot failures occurring in the RNO2 region. As the situation evolves, we will continue to provide our customers with updates on the matter. If you have any questions, we encourage you to reach out to support by email: [email protected] We apologize for any inconvenience this may cause and thank you for your patience while we work to resolve the matter in a timely manner. Thank you, CoreWeave Support August 9, 2026 5:22PM UTC Identified - The root cause has been identified and we are working on a resolution at this time. August 9, 2026 5:41PM UTC Monitoring - This incident has been mitigated. Node delivery and node reboot operations have now returned to normal. If you continue to experience any issues, please reach out to support: [email protected]. We apologize for the disruption this caused and thank you for your patience while we worked to resolve the matter. Thank you, CoreWeave Support August 9, 2026 11:05PM UTC Resolved - This incident is now resolved and our services are back operational. If you have any further questions please reach out to [email protected].

August 3, 2026 7:59PM UTC Investigating - We are investigating a service degradation in the US-EAST-04A region that may result in disruptions to cluster access/connectivity. As the situation evolves, we will continue to provide updates. If you have any questions, please contact [email protected]. We apologize for any inconvenience this may cause and appreciate your patience while we work to resolve the issue as quickly as possible. August 4, 2026 4:53PM UTC Identified - We have identified a power issue which has brought a swath of nodes offline. We are working to bring spare capacity back to production. August 6, 2026 8:36PM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

July 29, 2026 7:03PM UTC Scheduled - CoreWeave will be performing planned electrical maintenance at our US-EAST-04A facility from Monday, August 3, 2026, at 12:00 PM UTC through Thursday, August 6, 2026, at 7:00 PM UTC. This work upgrades the permanent power infrastructure for the DH3 B3 electrical lineup at CSZ01 (CTP-1). Phase 1 (August 3 through August 4): Utility feeder cutover and UPS testing. No planned impact to customer workloads. Electrical redundancy on the B3 lineup will be temporarily reduced during this phase. Phase 2 (August 4, approximately 5:00 PM UTC / 1:00 PM ET, through August 6, approximately 5:00 PM UTC / 1:00 PM ET): B3 PDU shutdown and permanent power cutover. A subset of compute nodes in US-EAST-04A on the DH3 B3 lineup will experience hard power loss for approximately 48 hours. CKS nodes will go NotReady; bare-metal nodes will power off. Network infrastructure in the region is not expected to lose power but may operate at reduced electrical redundancy. The customers affected in Phase 2 will be contacted directly prior to the maintenance. Impact: During Phase 2, affected compute capacity in US-EAST-04A will be unavailable for the duration of the PDU shutdown window. We do not expect impact to the Kubernetes control plane or to capacity outside the affected DH3 B3 node set. Other infrastructure in US-EAST-04A is unaffected. We will be actively monitoring the situation during this time. We appreciate your patience and understanding. If you have any further questions or require assistance, please don't hesitate to reach out to our support team at [email protected]. August 4, 2026 4:17PM UTC Active - Maintenance is in progress August 5, 2026 4:14PM UTC Active - This maintenance work has started August 5, 2026 8:07PM UTC Completed - Maintenance complete. Facilities work on the US-EAST-04A DH3 B3 electrical lineup at CSZ01 (CTP-1) has finished, and affected compute capacity has been restored. Power has been returned to the B3 PDUs and racks. We appreciate your patience during this maintenance window. If you continue to experience any issues, please contact [email protected].

August 4, 2026 10:56PM UTC Investigating - We are investigating a networking hardware issue in US-EAST-04A affecting connectivity for a subset of nodes. Out of an abundance of caution, impacted nodes have been temporarily removed from service while our engineers work to restore connectivity. Customers may see a small number of nodes become unavailable or unschedulable during this time. August 4, 2026 11:53PM UTC Identified - Our engineers have identified the issue and remediation is underway. We will provide another update within the next hour or sooner. August 5, 2026 12:25AM UTC Monitoring - The issue has been resolved and affected nodes have returned to service. We will continue to monitor. August 5, 2026 12:27AM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

August 2, 2026 1:08AM UTC Identified - We have identified the root cause of the issue and are actively working on a fix. We will update you when we have pushed a fix. August 2, 2026 1:23AM UTC Identified - We have identified the cause of an issue affecting Object Storage access key creation globally. Customers using SAML or OIDC-based access key creation may currently be unable to create new access keys. Our engineering team is actively working on mitigation and evaluating additional protective measures to restore normal service. We will continue to provide updates as progress is made. August 2, 2026 3:33AM UTC Resolved - CoreWeave Object Storage access key creation has been restored and is now ready and in working order. We appreciate your patience.

July 31, 2026 3:52PM UTC Identified - Hello, We are actively investigating elevated error rates affecting requests to some models available through CoreWeave Serverless and W&B Inference. Customers may experience failed requests. As the situation evolves, we will continue to provide our customers with updates on the matter. If you have any questions, we encourage you to reach out to support by email: [email protected] We apologize for the inconvenience and appreciate your patience. Thank You, CoreWeave Support July 31, 2026 5:01PM UTC Monitoring - Hello, The issue affecting some models available through CoreWeave Serverless and W&B Inference has been mitigated. Service has recovered, and we are monitoring performance to ensure continued stability. We will provide another update when monitoring is complete. We apologize for the inconvenience and appreciate your patience. Thank You, CoreWeave Support August 1, 2026 12:37AM UTC Resolved - Hello, The issue causing elevated error rates for some models available through CoreWeave Serverless and W&B Inference has been resolved. All affected models are now responding successfully. If you continue to experience issues, please contact [email protected]. We apologize for the inconvenience and appreciate your patience. Thank you, CoreWeave Support

July 29, 2026 1:57AM UTC Investigating - We are currently investigating an elevated rate of failed requests to CoreWeave AI Object Storage in the US-EAST-06 region. July 29, 2026 1:58AM UTC Identified - We have identified the issue and are continuing to work on a resolution at this time. July 29, 2026 5:34AM UTC Monitoring - We believe the issue has been mitigated, and we are continuing to monitor the affected services. If you are experiencing an issue or have any further questions please reach out to [email protected]. July 29, 2026 6:47AM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].

July 21, 2026 10:03PM UTC Investigating - We're currently investigating an issue that is preventing metrics and dashboards from loading for resources in our US-EAST regions. Customers may be unable to view cluster and node metrics in Grafana, and monitoring queries for US-EAST resources are returning errors. This is limited to metrics visibility only - It does not affect the health, availability, or performance of your running workloads, clusters, or nodes - compute continues to operate normally. Other regions (US-WEST and US-CENTRAL) are unaffected and their dashboards remain fully available. Our engineers are actively investigating and working to restore metrics access as quickly as possible. We apologize for the disruption and appreciate your patience. July 21, 2026 10:38PM UTC Monitoring - Metrics and dashboards for our US-EAST region have been restored, and monitoring queries are returning results normally again. Our engineers have applied a fix and are continuing to monitor closely to confirm full stability. As noted earlier, this issue was limited to metrics visibility and did not affect the health, availability, or performance of running workloads, clusters, or nodes. If you're still seeing gaps or errors when loading US-EAST metrics, please let us know. We'll post a final update once we've confirmed the region is fully stable. Thank you for your patience during the disruption. July 21, 2026 10:50PM UTC Resolved - We believe the issue is resolved, and our services are now operational. If you are continuing to experience issues, please reach out to [email protected].